A highly populated country is concerned about its infant mortality rate. What
might the country do in order to lower its infant mortality rate?
O A. Lower the rates of education
B. Encourage women to stay at home
C. Make health care available to families with children
D. Encourage the tradition of having large families

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.

tracks, burrows, eggshells, nests, tooth marks, or gastroliths

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.